Electric cartridge for an electronic cigarette and method for making the electric cartridge

ABSTRACT

The electric cartridge for an electronic cigarette of this invention comprises a piece of flexible substrate material comprising at least a flexible film which mounts an electrically conductive network in the form of an array and defining a plurality of resistive zones (pixels) and a plurality of power supply pins for supplying one or more electric currents and connected to the resistive zones. The resistive zones define heating means and are grouped into distinct modules. Each module corresponds to an uninterrupted portion of the electrically conductive network and comprises at least one resistive zone and respective power supply pins. The electric cartridge includes a plurality of portions of aromatic substance positioned on at least one face of the piece of flexible material. Each portion is associated with a resistive zone and positioned in proximity to a heating surface of the respective resistive zone.

This application is the National Phase of International ApplicationPCT/IB2016/052073 filed Apr. 12, 2016 which designated the U.S.

This application claims priority to Italian Patent Application No.BO2015A000173 filed Apr. 13, 2015, which application is incorporated byreference herein.

TECHNICAL FIELD

This invention relates to an electric cartridge for an electroniccigarette flavoured with aromatic substances.

The invention also relates to a method for making the electriccartridge.

BACKGROUND ART

This invention addresses the sector of what have come to be known aselectronic cigarettes. This term is used to denote devices which providean alternative to traditional smokers' articles and allow users torecreate the gestures and feeling of smoking traditional smokers'articles.

An electronic cigarette can be likened to a vaporizing device whichproduces an aerosol containing one or more aromatic substancestransported by a flow of carrier vapour. In the context of thisinvention, the term “vaporization” is used to mean, generally speaking,the production of a gas phase. Such production of a gas phase may occuras a result of vaporization in the strict sense (transition of asubstance from the liquid to the gas phase) or as a result ofsublimation (transition of a substance from the solid to the gas phase).

Usually, the gas phase is produced by heating a starting substancecontained in a replaceable cartridge or refill.

Electronic cigarettes can be broadly divided into two different types,according to the form which the vaporizable substance contained in therefill comes in. In a first type of electronic cigarettes, the startingcomposite substance is in liquid form, whilst in the second type ofelectronic cigarettes, the starting composite substance is in solidform.

In the first type, the liquid refill is heated by resistance heating.The liquid part vaporizes to form the vapour which carries the aerosoldefined on the basis of the aromatic substances contained in the refill.An electronic cigarette of the first type is described in documentUS20130276804.

The Applicant has noticed that one disadvantage of electronic cigarettesbased on liquid refills is the need to manage the preparation anddistribution of refills which require containers or tanks. Moreover,although a user has a variety of flavours to choose from, only onerefill, and hence one flavour, can be used at a time.

Document WO2013098405 provides an example of a second type of electroniccigarettes, involving the use of a mixture or blend of tobacco which isheated by a metallic plate or element which is in turn heated by anelectric circuit. A part of the tobacco mixture has a vaporizablecontent which produces the carrier vapour which transports the aromaticsubstances.

Document U.S. Pat. No. 5,322,075 provides another example of the secondtype of electronic cigarettes where the heating elements are connectedto each other by electrical connections. The flavour generatingcomposite, which is based on aromatic substances, is heated andvaporized by the heating elements.

The Applicant has noticed that even electronic cigarettes based on solidrefills give the user a limited choice of flavours and come inrelatively rigid, standard configurations, in particular with regard tothe choice and control of the aromatic substance during use of thecigarette. Document U.S. Pat. No. 5,322,075 in particular involves anelectric circuit divided between electrical connectors and heatingelements which limits its applicability to simple, predetermined shapes,thus limiting the versatility of use of the cigarette.

DISCLOSURE OF THE INVENTION

In this context, the basic technical purpose of this invention is toprovide an electric cartridge for an electronic cigarette and a methodfor making the cartridge, which is versatile and reliable and whichallows effective vaporization, meaning by that the production of a gasphase capable of satisfying the increasingly stringent requirements ofusers.

The purpose specified is substantially achieved by an electric cartridgefor an electronic cigarette and a method for making the cartridgecomprising the technical features set out in one or more of the appendedclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described below with reference to the accompanyingdrawings, which illustrate a non-limiting embodiment of it and in which:

FIG. 1 shows a side view of a first possible embodiment of an electriccartridge according to this invention;

FIG. 2 shows a front view of the electric cartridge of FIG. 1;

FIG. 3 shows a side view of a component of the electric cartridge ofFIG. 1;

FIG. 4 shows a front view of the component of FIG. 3;

FIG. 5 shows an exploded perspective view of a component of the electriccartridge of FIG. 1;

FIG. 6 shows a perspective view of the component of FIG. 5 whenassembled;

FIG. 7 shows a longitudinal cross section of a possible embodiment of anelectronic cigarette;

FIG. 8 shows a front view of the electronic cigarette of FIG. 7 from theside indicated by the arrow VIII;

FIG. 9 shows a transverse cross section of the electronic cigarette ofFIG. 7 through the line IX-IX;

FIG. 10 shows a longitudinal cross section of an assembly comprising theelectronic cigarette of FIG. 7 in a configuration of use associated withthe electric cartridge of FIG. 1;

FIG. 11 shows a front view of the assembly of FIG. 10 from the sideindicated by the arrow XI;

FIG. 12 shows a transverse cross section of the assembly of FIG. 10through the line XII-XII;

FIG. 13 shows a schematic view of a system for controlling an electroniccigarette;

FIG. 14 shows an exploded perspective view of the electronic cigarette;

FIG. 15 schematically represents a step of the making method accordingto this invention;

FIGS. 16 and 17 are schematic views showing a further possibleembodiment of an electric cartridge according to this invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

The numeral 1 in FIGS. 1 and 2 denotes in its entirety an electriccartridge for holding aromatic substances and suitable for use in anelectronic cigarette 100, illustrated for example in FIGS. 7-9.

The term “electronic cigarette” is used to mean an electronic device forsmokers, commonly known as e-cigarette, of any shape and size, and whoseuse and function can be substantially likened to those of a traditionalcigarette made from tobacco. Preferably, this device has cylindricalshape and size comparable to those of a traditional cigarette, is usedas a surrogate or alternative to cigarettes and is designed to release aflavoured vapour or aerosol.

The electric cartridge 1 comprises a piece 2 of flexible substratematerial illustrated in detail in FIGS. 5 and 6. The piece 2 comprises aflexible film 3 which mounts an electrically conductive network 4. Theflexible film 3 is, for example, a film of plastic material resistant tohigh temperatures of between approximately 250° C. and 300° C. Morespecifically, the flexible film may be made of a polyimide material. Thethickness of the flexible film 3 is preferably approximately 0.1 mm.

The electrically conductive network 4 is in the form of an array anddefines a plurality of resistive zones 5 and a plurality of power supplypins 6 for supplying one or more electric currents and connected to theresistive zones 5. For clarity, only some of the resistive zones andpower supply pins are numbered in the accompanying drawings.

In the example embodiment shown in the accompanying drawings, the powersupply pins 6 are located on opposite sides of the piece 2.Alternatively, they might be located on adjacent sides or only on oneside of the piece 2.

The electrically conductive network 4 may be printed on the flexiblefilm 3 or applied thereto by other techniques.

The resistive zones 5 define heating means, in particular a heatingsurface 5 a. Further, the resistive zones 5 are grouped into distinctmodules 7. In the example embodiment illustrated, each module 7comprises a resistive zone 5 and two power supply pins 6.

Each module 7 corresponds to an uninterrupted portion of theelectrically conductive network, that is to say, is made by continuousprinting or deposition of a single conductive material. Each resistivezone 5 is preferably made by depositing the conductive material along awinding path defining the heating surface 5 a or increasing the surfaceextension of the conductive material, uninterruptedly along the path.

The piece 2 of flexible material which is used as substrate may compriseinsulating points obtained by deposition/printing on possible crossingpoints of the electrically conductive network 4. Alternatively, theflexible film 3 may be a multilayer flexible printed circuit, with theelectrically conductive network 4 made on two or more separate layerswith interposed insulating layers.

The numeral 8 denotes portions of aromatic substance positioned on oneface of the piece 2 of flexible material. Each portion 8 of aromaticsubstance is associated with one resistive zone 5 and positioned at theheating surface 5 a of the respective resistive zone.

It is possible to use a composite containing the same aromaticsubstance, for example made by premixing flavours/substancesconstituting the recipe, for all the portions 8, hence for all themodules 7. Alternatively, the aromatic substance, for example a singleflavour, of a first module might be different from the aromaticsubstance, for example a single flavour, of a second, distinct module.Further, a plurality of different aromatic substances might bedistributed among the different modules.

It should be noted that the electrically conductive network 4 may bemade in the form of a passive array comprising a plurality of arrays,each dedicated to a particular aromatic substance (for example, an arrayof nicotine points, one of menthol points, and so on).

Alternatively, the electrically conductive network 4 may be made in theform of an active array where each portion 8 of aromatic substance isassociated with a dedicated, bistable memory circuit which keeps its“ON” state until next command. In this case, the controlling array,which is one for all, is scanned very rapidly to cause vaporizing (orrather sublimating) of the desired portions 8 one at a time. Thecontrolling array is then scanned a second time for switching off.

Preferably, the portions 8 of aromatic substance are obtained bydeposition of a composite containing an aromatic substance (for example,by jet printing a composite containing an aromatic substance, depositionof a fluid filament, rotogravure printing). Depending on the compositeused, the portions 8 may be entirely solid or partly solid with a solidouter layer enclosing a liquid or semiliquid centre. In the first case,vaporization (that is, the production of a gas phase) is the result ofsublimation of the solid composite. In the second case, vaporization(that is, the production of the gas phase) is the result partly of thesublimation of the outer layer and partly of the vaporization proper ofthe liquid or semiliquid centre.

For example, the aforementioned printing may be obtained by a printingprocess which is similar, or can be likened, to inkjet printing, wheredroplets of the composite are propelled onto the printing substrate.Each portion 8 may be made up of one or more superposed or juxtaposedlayers, each made in one depositing pass, for example a jet printingpass, and comprising an aromatic substance selected on the basis of apredetermined recipe. In a possible embodiment, there may be one or moreportions 9 of a volatilizable substance suitable for releasing basic orcarrier vapour, leaving to the portions 8 only the function of supplyingthe aromatic substance.

As illustrated in FIGS. 5 and 6, for example, the resistive zones 5 arearranged along a plurality of rows 10 and columns 11 obtained bysequential and/or mirror-symmetric repetition of a group 12 of modules 7of resistive zones. In the example illustrated, the group 12 is repeatedboth sequentially along the direction of the columns 11 andmirror-symmetrically to form a row 10. The rows and columns may be madeon two or more separate layers with insulating layers interposed betweenthem in a flexible film 3 made in the form of a multilayer printedcircuit.

The piece 2 of flexible substrate material may be perforated with a meshof a size suitable for allowing air to pass through it correctly.

As illustrated in FIGS. 5 and 6, for example, the piece 2 of flexiblesubstrate material may comprise a covering film 13 located on theelectrically conductive network 4 to isolate it from the portions 8 ofaromatic substance positioned on the covering film itself. Thedimensions of the covering film 13 are such as to leave the power supplypins 6 uncovered. The covering film 13 is made of a material suitablefor electrically insulating the electrically conductive network 4 andpreferably preventing the electrically conductive network 4 fromreleasing harmful substances.

In an alternative not illustrated, the electrically conductive network 4is positioned on one face of the flexible film 3 and the portions 8 ofaromatic substance are positioned on the opposite face of the flexiblefilm so that the flexible film 3 is interposed between the electricallyconductive network 4 and the portions 8 of aromatic substance,performing the function of the flexible film 13.

As illustrated in FIGS. 5 and 6, for example, the piece 2 of flexiblesubstrate material may comprise a base sheet (14) coupled to theflexible film 3 on the side opposite to the portions 8 of aromaticsubstance. The dimensions of the base sheet 14 are such as to leave thepower supply pins 6 uncovered. The base sheet 14 may be made ofpaperboard and may be coupled to the flexible film 3 for example by alayer of adhesive material, not illustrated, chosen according to itsheat stability, which must be greater than that needed to vaporize theportions 8. In the example of FIGS. 5 and 6, the base sheet 14 comprisesfastening extensions 15 to which a filter 16 of the electric cartridge 1is permanently fixed. Permanent fixing may be accomplished by a shapefit comprising a socket 17 in the filter 16 suitably shaped to receivethe fastening extensions 15 and further secured for example by gluing orthe provision of a suitably sawtoothed profile of the fasteningextensions 15.

In the electric cartridge 1, the piece 2 may be kept stretched or shapedin such a way as to contain the transverse dimensions of the electriccartridge itself.

In the example illustrated in FIGS. 1 and 2, the piece 2 of flexiblesubstrate material is folded in concertina fashion along fold lines 18illustrated by way of example in FIG. 5 with reference to the base sheet14. The fold lines 18 delimit respective panels 19 of the concertina.Each column 11 of resistive zones 5 occupies one panel 19 of theconcertina. Further, the piece 2 of flexible substrate material is woundabout a longitudinal axis 20 parallel to the fold lines 18. In windingthe piece 2, the panels 19 of the concertina are grouped in pairs 21 ofparallel, juxtaposed panels at the face opposite to the portions 8 ofaromatic substance. The pairs 21 of panels are arranged along directions22 radial to the longitudinal axis 20. In the example illustrated, thereare three pairs 21 of panels arranged at 120° from each other. In otherwords, the piece 2 is folded and wound to form a transverse crosssection with arms arranged radially, for example in the shape of a Y, ofthe same length and equally spaced from each other.

In an alternative embodiment, not illustrated, the piece 2 is folded inconcertina fashion and is kept in a flat shape, that is to say, notwound about the longitudinal axis.

FIGS. 16-17 illustrate a variant embodiment in which the piece 2 is notfolded in concertina fashion but is wound about a longitudinal axis 20,leaving the portions 8 of aromatic substance preferably directedoutwards relative to the longitudinal axis 20. In this case, the windingcomprises a plurality of superposed coils 23 preferably spaced from eachother by supporting shoulders 24 located on opposite, end sides of thepiece 2. The supporting shoulders 24 comprise notches 24 a adapted tofacilitate winding in coils and to create passages for the air whichstrikes the portions 8.

Alternatively, the piece 2 of flexible substrate material is wound intothe shape of a cylindrical surface.

The power supply pins may be made both on the ends of the piece 2 and ondirectrices of the cylindrical or coiled surface.

In the cases where the piece is wound, in particular in the case shownin FIGS. 16 and 17, the piece may be wound around an inner core 25. Theinner core 25 preferably comprises a plurality of electrical contacts 26adapted to power the power supply pins 6 and/or a local processingunit—for example a chip—configured to control the power supply of themodules 7 of the electrically conductive network 4 as a function of aparticular power supply program, as described below with reference tothe modes of using the electric cartridge and the electronic cigarette.

In one possible embodiment, the electric cartridge 1 may comprise meansfor recognizing the state of the electric cartridge and/or of theportions 8 and configured to record/provide information regarding thestate (new/used) of the electric cartridge itself. In a firstembodiment, the recognition means comprise a static, non-volatile memorywhich is structurally integrated in the electric cartridge 1 andconfigured to maintain its state even in the absence of power supply.

In an alternative solution, the recognition means comprise a storageelement—for example a fuse—associated with the electrically conductivenetwork 4 and with each resistive zone 5.

The electric cartridge 1 can be made from a continuous web N of flexiblesubstrate material comprising at least one layer of flexible film 3mounting a plurality of modules 7 of electrically conductive networks 4.The continuous web N is, for example, wound on a roll B, as illustratedin FIG. 15.

The continuous web N may be prepared in advance by coupling a continuousweb of flexible film 3 to a continuous web of covering film 13 placed onthe electrically conductive networks 4. Alternatively, there is a stepof coupling the continuous web of flexible film 3 to the continuous webof covering film 13, not illustrated in FIG. 15.

The continuous web N may also be prepared in advance by coupling thecontinuous web of flexible film 3 to a continuous web of base sheet 14placed on the face opposite to that where the portions 8 will be placed.Alternatively, there is a step of coupling the continuous web offlexible film 3 to the continuous web of base sheet 14, not illustratedin FIG. 15.

The continuous web N of flexible substrate material is made to advancealong a feed path A along which it meets one or more deposition headsfor depositing a composite containing an aromatic substance.

For example, the deposition heads may be like those used for jetprinting designed to propel droplets of composite on the printingsubstrate to deposit on the continuous web doses of a compositecomprising an aromatic substance, in proximity to the heating surface 5a of the resistive zones 5 in order to obtain portions 8 of aromaticsubstance. FIG. 15 shows two deposition heads T1, T2 for depositingdoses of a composite containing different aromatic substances to formdifferent portions 8 at different modules 7. More specifically, at leastone dose of a composite comprising an aromatic substance is deposited onthe continuous web in proximity to the heating surface 5 a of aresistive zone 5, and at least one dose of a composite comprising adifferent aromatic substance is deposited on the continuous web inproximity to the heating surface 5 a of a resistive zone 5 of a seconddistinct module.

Deposition is accomplished in phase with the array of resistive zones 5,for example by providing a centring notch R or an optically recognizableelement, or by including a step of acquiring the pattern of theresistive zones by means of a vision system which allows controllingdeposition in a “synchronous” manner.

Alternatively, the deposition heads may be used to deposit differentlayers, juxtaposed or superposed, of the same portion 8.

One of the deposition heads may be used to deposit on the continuous webat least one dose of a composite comprising a volatilizable substancesuitable for releasing basic or carrier vapour in order to obtain atleast one portion 9 of volatilizable substance.

In the example illustrated in FIG. 15, the face F of the continuous webN which the portions 8 are deposited on may be a face of the layer offlexible film 3 opposite to the electrically conductive networks 4 or aface of the covering film 13. Alternatively, the portions 8 aredeposited directly on the heating surfaces 5 a of the resistive zones 5.

Cutting means are provided along the feed path A for cutting an endportion P of the continuous web N along a cutting line T to obtain apiece 2 of flexible substrate material containing a predetermined numberof modules 7. As reference for the cutting step it is possible to usethe same centring notch as that used for synchronizing the depositionstep.

The piece 2 may be shaped to adapt to the required shape of the electriccartridge 1. In particular, it may be wound in coils and/or folded inconcertina fashion.

Alternatively, pre-cut pieces 2 may be made to advance along the feedpath A for the portions 8 and/or the portions 9 to be deposited on them.

The portions 8 and/or the portions 9 may be made using differentdeposition techniques other than jet printing.

Alternatively, making the electric cartridge 1 may involve continuouslymaking the electrically conductive network 4 on the continuous web offlexible film 3.

With reference to FIGS. 7-9, one possible embodiment of the electroniccigarette 100 comprises a housing 101 open to the outside at an inlet101 a and adapted to receive the electric cartridge 1.

The electronic cigarette 100 comprises electrical power supply means, inparticular one or more batteries 102. In the example illustrated, thereare three batteries 102.

The electrical power supply means are connected to a plurality ofelectrical contacts 103 which lead into the housing 101 in such a way asto power the power supply pins 6 of the electric cartridge 1 when it isinserted into the electronic cigarette 100.

External contacts 104 may be provided to recharge the batteries 102. Thehousing 101 is made inside a body 105, for example made of plasticmaterial, which extends along a main direction of extension 106 acoinciding with a main direction of extension of the housing 101 andwith a direction of inserting the electric cartridge 1 into theelectronic cigarette 100.

The housing 101, in a use configuration of the electronic cigarette, isconfigured to define grooves 106 (FIG. 12) for the passage anddistribution of air and adapted to face the portions 8 of aromaticsubstance. The grooves 106 are in communication with air inlets 107leading, for example, in proximity to a far end 108 of the electroniccigarette.

The housing 101 has a transverse cross section (FIGS. 8 and 9)configured to define the grooves 106 which, in a use configuration ofthe electronic cigarette, are delimited by the walls of the housing 101and by the electric cartridge 1 (FIG. 12).

The housing 101 comprises, for example, fastening seats 109 adapted tohold the electric cartridge 1 in place in a configuration of use of theelectronic cigarette 100. More specifically, the electrical contacts 103lead into the housing 101 in proximity to one of the fastening seats109.

If the electric cartridge 1 has a transverse cross section with radialarms, in particular like the one illustrated in FIGS. 1 and 2, thehousing 101 comprises a plurality of radial portions 110, each adaptedto receive a pair 21 of panels 19 of the electric cartridge 1.Preferably, there is a battery 102 positioned between two radialportions 110 and extending along the main direction of extension of theelectronic cigarette 100.

FIGS. 10-12 show the electronic cigarette 100 in a configuration of use,where the electric cartridge 1 has been inserted into the housing 101. Ashoulder 112 in abutment against the filter 16 defines the correctposition of the electric cartridge 1 in the electronic cigarette 100.

A local processing unit 111 may be integrated in the electroniccigarette 100 or in the electric cartridge 1, for example in proximityto the core 25, as described above.

The local processing unit 111 is configured to control the electricalpower supply of the modules 7 of the electrically conductive network 4as a function of a particular power supply program, as described belowwith reference to the modes of using the electric cartridge and theelectronic cigarette.

Preferably, the local processing unit 111 comprises a communicationmodule 113 configured to be placed in wireless or wired connection witha communication module of a remote processing unit which are describedbelow with reference to a control system 200 for an electronic cigarette100 illustrated for example in FIG. 13.

The electronic cigarette 100 may also comprise at least one temperaturesensor and/or at least one negative pressure sensor. In this case, thelocal processing unit 111 comprises a processing module 114 configuredto receive data from the temperature sensor and/or from the negativepressure sensor and to control the electrical power supply of themodules 7 of the electrically conductive network 4 as a function of thisdata.

The purpose of subdivision into distinct functional modules is solely todescribe the functionalities of the processing unit clearly and fully.Each processing unit may consist of a single electronic device, suitablyprogrammed to perform the functionalities described, and the differentmodules may correspond to hardware entities and/or software routinesforming part of the programmed device. Alternatively, or in addition,these functionalities may be performed by a plurality of electronicdevices over which the aforementioned electronic devices may bedistributed. Further, the processing units may use one or moreprocessors to perform the instructions contained in the modules.

The electronic cigarette 100 may also comprise a display or a status LEDto indicate the power supply program currently active on the electroniccigarette itself and, as described below, corresponding to a particular“smoking program”. The electronic cigarette 100 may also compriseselecting means for selecting the power supply program (and hence the“smoking program”) at local level, that is to say, preset on the localprocessing unit 111.

Using the electric cartridge 1 and the electronic cigarette 100 involvesloading the electronic cigarette 100 with an electric cartridge 1provided with portions 8 in a particular sequence and arrangement. Thelocal processing unit 111 may operate as a function of one or more powersupply programs which are predefined and preset or downloaded from aremote processing unit. The preset programs may be selected at locallevel using the aforementioned selecting means (for example, 3-4intensity levels and 2-3 usual programs can be selected).

Based on the selection made, the power supply means sequentially feedcertain power supply pins 6 or groups of power supply pins 6 to vaporizecertain aromatic substances simultaneously and/or sequentially and thedisplay or the status LED indicates the power supply program currentlyactive on the electronic cigarette. More specifically, the modules 7 areselectively powered to follow a predetermined sequence or combination ofaromatic substances each time the user inhales.

The selecting means may also be configured to locally modify the“smoking program” even at run time, for example to differentiate thepuffs.

For example, by setting the electric cartridge 1 according topredetermined flavour patterns (vanilla, coffee, chocolate, menthol,etc.), it is possible to define a “smoking program” which allowsvaporizing only the vanilla flavour, or only the menthol flavour, or acombination corresponding to the current effect of the curing on thetobacco. The power supply program may be activated by the user'sinhaling, for example by means of the negative pressure sensor, and mayfollow predetermined vaporizing sequences, even of different aromaticsubstances.

With reference to FIG. 13, the control system 200 for the electroniccigarette 100 comprises an electronic cigarette 100 provided with alocal processing unit 111 comprising a communication module 113. Thecontrol system 200 also comprises a remote processing unit, for exampledefined by a computer 201 or a smartphone 202 and comprising acommunication module 203. The remote processing unit is configured to:

a) read the predefined power supply program/programs of the localprocessing unit 111 by means of a wireless or wired connection betweenthe communication module 203 of the remote processing unit and thecommunication module 113 of the local processing unit 111;b) be interfaced with a user to modify the predefined power supplyprogram/programs;c) modify the predefined power supply program/programs in accordancewith user settings thereby determining a modified power supplyprogram/modified power supply programs;d) transmit the modified power supply program/programs to the localprocessing unit 111 by means of a wireless or wired connection betweenthe communication module 203 of the remote processing unit and thecommunication module 113 of the local processing unit 111.

The user can therefore use a software residing in the computer 201 tochoose the power supply program suitable for the desired “smokingprogram”, also according to the type of electric cartridge 1. Thecomputer 201 allows carrying out steps b) and c) so that the modifiedpower supply program sent to the local processing unit 111 can run thedesired “smoking program”.

Similarly, the user can carry out steps b) and c) using an application(app) for a smartphone 202.

More specifically, communication between the electronic cigarette 100and the remote processing unit can occur by way of near fieldcommunication (NFC) technology which allows two-way. short-rangewireless connectivity such that communication occurs by moving theelectronic cigarette 100 close to, that is “approaching” it, for exampleto a smartphone. This technology makes it possible to view on thedisplay and/or on the smartphone further information about the activesmoking program.

As soon as the power supply program (“smoking program”) is downloadedfrom the remote processing unit, the display or the status LED indicatesthe currently active smoking program.

It should be noted that the local processing unit 111 can also beconfigured to scan the portions 8 and to reconstruct the map of thosestill available (when recognition means are provided) and, for example,tell the user how many puffs and which portions 8 remain.

The invention claimed is:
 1. A method for making an electric cartridgefor an electronic cigarette, where the cartridge comprises a piece offlexible substrate material comprising at least a flexible film on whichare defined a plurality of a resistive zones grouped into distinctmodules, the electric cartridge comprising a plurality of portions ofaromatic substance positioned on at least one face of the piece offlexible material, each portion being associated with a resistive zoneand positioned in proximity to a heating surface of the respectiveresistive zone, the method comprising the steps of: preparing acontinuous web of flexible substrate material comprising at least onelayer of flexible film mounting a plurality of modules of electricallyconductive networks, causing the continuous web of flexible substratematerial to advance along a feed path; depositing on the continuous webat least one dose of a composite comprising an aromatic substance inproximity to the heating surface of a resistive zone in order to obtaina portion of aromatic substance; cutting an end portion of thecontinuous web to obtain a piece of flexible substrate materialcontaining a certain number of modules.
 2. The method according to claim1, wherein it comprises a sub-step of depositing two or more superposedor juxtaposed layers, each comprising a predetermined aromaticsubstance.
 3. The method according to claim 1, wherein it comprises thestep of depositing on the continuous web at least one dose of acomposite comprising a volatilizable substance suitable for releasingbasic or carrier vapour in order to obtain at least one portion ofvolatilizable substance.
 4. The method according to claim 1, wherein itcomprises the steps of: depositing on the continuous web in proximity tothe heating surface of a resistive zone of a first module at least onedose of a composite comprising an aromatic substance; depositing on thecontinuous web in proximity to the heating surface of a resistive zoneof a second, distinct module at least one dose of a composite comprisinga different aromatic substance.
 5. The method according to claim 1,wherein the step of preparing the continuous web of flexible substratematerial comprises the step of coupling a continuous web of flexiblefilm to a continuous web of covering film positioned on the electricallyconductive networks, thereby obtaining the continuous web of flexiblesubstrate material.
 6. The method according to claim 1, wherein the doseof composite comprising the aromatic substance is deposited on a face ofthe flexible film layer opposite to the electrically conductivenetworks.
 7. The method according to claim 1, wherein the step ofpreparing the continuous web of flexible substrate material comprisesthe step of coupling a continuous web of flexible film to a continuousweb of base sheet.
 8. An electric cartridge for an electronic cigarette,obtained by the method according to claim 1 and comprising a piece offlexible substrate material comprising at least a flexible film (3), onwhich are defined a plurality of resistive zones grouped into distinctmodules and which mounts an electrically conductive network in the formof an array and defining a plurality of resistive zones (pixels) and aplurality of power supply pins for supplying one or more electriccurrents and connected to the resistive zones; the resistive zonesdefining heating means and being grouped into distinct modules, eachmodule corresponding to an uninterrupted portion of the electricallyconductive network and comprising at least one resistive zone andrespective power supply pins; the electric cartridge comprising aplurality of portions of aromatic substance positioned on at least oneface of the piece of flexible material, each portion being associatedwith a resistive zone and positioned in proximity to a heating surfaceof the respective resistive zone.
 9. The electric cartridge according toclaim 8, wherein the aromatic substance of a first module is differentfrom the aromatic substance of a second, distinct module.
 10. Theelectric cartridge according to claim 8, wherein the piece of flexiblesubstrate material comprises a covering film located on the electricallyconductive network to isolate it from the portions of aromatic substancepositioned on the covering film.
 11. The electric cartridge according toclaim 8, wherein the electrically conductive network is positioned on aface of the flexible film and wherein the portions of aromatic substanceare positioned on the opposite face of the flexible film, the flexiblefilm being interposed between the electrically conductive network andthe portions of aromatic substance.
 12. The electric cartridge accordingto claim 8, wherein the portions of aromatic substance are obtained bymeans of a jet printer which sprays a composite containing an aromaticsubstance.
 13. The electric cartridge according to claim 12, wherein aportion of aromatic substance comprises two or more superposed orjuxtaposed layers, each comprising a predetermined aromatic substanceand made by one depositing pass.
 14. The electric cartridge according toclaim 8, wherein it comprises one or more portions of a volatilizablesubstance suitable for releasing basic or carrier vapour.
 15. Theelectric cartridge according to claim 8, wherein the resistive zones arearranged along a plurality of rows and columns obtained by sequentialand/or mirror-symmetric repetition of a group of modules of resistivezones.
 16. The electric cartridge according to claim 8, wherein thepiece of flexible substrate material is wound about a longitudinal axisand wherein the portions of aromatic substance are preferably directedoutwards relative to the longitudinal axis.
 17. The electric cartridgeaccording to claim 16, wherein the wound piece of flexible substratematerial forms a cylindrical surface or a plurality of superposed coilspreferably spaced from each other by supporting shoulders located onopposite, end sides of the piece of flexible material.
 18. The electriccartridge according to claim 8, wherein the piece of flexible substratematerial is folded in concertina fashion along fold lines delimitingrespective panels of the concertina, the resistive zones being arrangedalong a plurality of columns, each column occupying a panel of theconcertina.
 19. The electric cartridge according to claim 8, wherein thepiece of flexible substrate material is wound about a longitudinal axisparallel to the fold lines the panels of the concertina being preferablygrouped into pairs of parallel, juxtaposed panels at the face oppositeto the portions of aromatic substance, the pairs of panels beingarranged along directions radial to the longitudinal axis, for exampleat 120° from each other.
 20. The electric cartridge according to claim8, wherein it comprises an inner core around which the piece of flexiblesubstrate material is wound, the inner core preferably comprising aplurality of electrical contacts adapted to power the power supply pinsand/or a local processing unit configured to control the power supply ofthe modules of the electrically conductive network as a function of aparticular power supply program.
 21. The electric cartridge according toclaim 8, wherein the piece of flexible substrate material comprises abase sheet coupled to the flexible film on the side opposite to theportions of aromatic substance.
 22. The electric cartridge according toclaim 21, wherein the base sheet comprises at least one fasteningextension to which a filter of the electric cartridge is permanentlyfixed.